Tasker sometimes returns/detects a zero as caller id
A few months ago i was having trouble with a profile that sends an SMS prompting an unknown (not in address book) contact to identify itself. The profile sometimes stopped sending the SMS so i added a second text file that logs every caller id regardless. Since then everything seemed to work fine until a few days ago when the app, once again, did not send the SMS as instructed. It turns out that tasker detects a zero as a caller id when in fact it is plainly visible in the call logs. Is this a known bug?
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Profile: 1-Unknown Caller (2)
Cooldown: 300
Event: Missed Call [ Caller:!C:ANY ]
Enter: Sconosciuto (3)
A1: Write File [ File:/storage/2B7C-6A21/Download/tutti.txt Text:%CNUM Append:On Add Newline:On Continue Task After Error:On ]
A2: If [ %CNUM ~ +393* ]
A3: Write File [ File:/storage/2B7C-6A21/Download/sconosciuti.txt Text:%CNUM Append:On Add Newline:On Continue Task After Error:On ]
A4: Send SMS [ Number:%CNUM Message:Text Store In Messaging App:On SIM Card: Wait For Result:Off ]